Are your peptides third-party tested?
Yes. Every compound is independently analyzed by third-party laboratories using HPLC and Mass Spectrometry for identity and purity. Certificates of analysis are available — see our COAs page.
What purity can I expect?
All PEPSTAR research peptides are verified to 99%+ purity. Purity is confirmed for each batch before it ships.
How fast do orders ship?
Orders placed before 3PM EST ship the same day from our USA facility. You'll receive tracking as soon as your order is dispatched.
Do you offer free shipping?
Yes — shipping is free on all orders over $200. Orders under $200 ship at a flat $10 rate.
How should I store the products?
Store lyophilized powder at −20°C. Once reconstituted, refrigerate at 2–8°C and use within the recommended window. Storage guidance is printed on every vial.
How do I reconstitute lyophilized peptides?
Most lyophilized peptides are reconstituted with bacteriostatic water. We carry BAC water and syringes in our catalog. Our team is happy to help with guidance for your specific compound.
What payment methods do you accept?
After placing your order you'll receive a secure payment link by email along with your confirmation. Your order is reserved the moment it is submitted.
Are these products for human use?
No. All products are sold strictly for laboratory and research use only. They are not for human or veterinary use, consumption, or therapeutic application.
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